pkg/report: ignore more guilty files

Ignore arch/arm64/kernel/process.c and some of page cache sources, as
the real problem will much more likely lie in the caller.

2 files changed, 75 insertions, 1 deletions

diff --git a/pkg/report/testdata/linux/guilty/21 b/pkg/report/testdata/linux/guilty/21
index 7006f8e70..a324159e8 100644
--- a/pkg/report/testdata/linux/guilty/21
+++ b/pkg/report/testdata/linux/guilty/21
@@ -1,4 +1,4 @@
-FILE: mm/filemap.c
+FILE: fs/block_dev.c
 
 INFO: task syz-executor6:9207 blocked for more than 120 seconds.
       Not tainted 4.15.0-rc2-next-20171208+ #63
diff --git a/pkg/report/testdata/linux/guilty/62 b/pkg/report/testdata/linux/guilty/62
new file mode 100644
index 000000000..c3d3bddb5
--- /dev/null
+++ b/pkg/report/testdata/linux/guilty/62
@@ -0,0 +1,74 @@
+FILE: fs/gfs2/lops.c
+
+INFO: task kworker/1:2:2221 blocked for more than 143 seconds.
+      Not tainted 6.1.0-rc8-syzkaller-33330-ga5541c0811a0 #0
+"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+task:kworker/1:2     state:D stack:0     pid:2221  ppid:2      flags:0x00000008
+Workqueue: gfs_recovery gfs2_recover_func
+Call trace:
+ __switch_to+0x180/0x298 arch/arm64/kernel/process.c:555
+ context_switch kernel/sched/core.c:5209 [inline]
+ __schedule+0x408/0x594 kernel/sched/core.c:6521
+ schedule+0x64/0xa4 kernel/sched/core.c:6597
+ io_schedule+0x38/0xbc kernel/sched/core.c:8741
+ folio_wait_bit_common+0x430/0x97c mm/filemap.c:1296
+ folio_wait_bit+0x30/0x40 mm/filemap.c:1440
+ folio_wait_locked include/linux/pagemap.h:1022 [inline]
+ gfs2_jhead_process_page+0xb4/0x40c fs/gfs2/lops.c:476
+ gfs2_find_jhead+0x450/0x50c fs/gfs2/lops.c:594
+ gfs2_recover_func+0x278/0xcc8 fs/gfs2/recovery.c:460
+ process_one_work+0x2d8/0x504 kernel/workqueue.c:2289
+ worker_thread+0x340/0x610 kernel/workqueue.c:2436
+ kthread+0x12c/0x158 kernel/kthread.c:376
+ ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:863
+INFO: task syz-executor189:3110 blocked for more than 143 seconds.
+      Not tainted 6.1.0-rc8-syzkaller-33330-ga5541c0811a0 #0
+"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+task:syz-executor189 state:D stack:0     pid:3110  ppid:3109   flags:0x00000009
+Call trace:
+ __switch_to+0x180/0x298 arch/arm64/kernel/process.c:555
+ context_switch kernel/sched/core.c:5209 [inline]
+ __schedule+0x408/0x594 kernel/sched/core.c:6521
+ schedule+0x64/0xa4 kernel/sched/core.c:6597
+ bit_wait+0x18/0x60 kernel/sched/wait_bit.c:199
+ __wait_on_bit kernel/sched/wait_bit.c:49 [inline]
+ out_of_line_wait_on_bit+0xc8/0x140 kernel/sched/wait_bit.c:64
+ wait_on_bit include/linux/wait_bit.h:76 [inline]
+ gfs2_recover_journal+0xc0/0x104 fs/gfs2/recovery.c:577
+ init_journal+0x930/0xcbc fs/gfs2/ops_fstype.c:835
+ init_inodes+0x74/0x184 fs/gfs2/ops_fstype.c:889
+ gfs2_fill_super+0x630/0x874 fs/gfs2/ops_fstype.c:1247
+ get_tree_bdev+0x1e8/0x2a0 fs/super.c:1324
+ gfs2_get_tree+0x30/0xc0 fs/gfs2/ops_fstype.c:1330
+ vfs_get_tree+0x40/0x140 fs/super.c:1531
+ do_new_mount+0x1dc/0x4e4 fs/namespace.c:3040
+ path_mount+0x358/0x890 fs/namespace.c:3370
+ do_mount fs/namespace.c:3383 [inline]
+ __do_sys_mount fs/namespace.c:3591 [inline]
+ __se_sys_mount fs/namespace.c:3568 [inline]
+ __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3568
+ __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
+ invoke_syscall arch/arm64/kernel/syscall.c:52 [inline]
+ el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142
+ do_el0_svc+0x48/0x140 arch/arm64/kernel/syscall.c:197
+ el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637
+ el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
+ el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584
+
+Showing all locks held in the system:
+1 lock held by rcu_tasks_kthre/11:
+ #0: ffff80000d4a4768 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507
+1 lock held by rcu_tasks_trace/12:
+ #0: ffff80000d4a4db8 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507
+1 lock held by khungtaskd/27:
+ #0: ffff80000d4a4640 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:303
+2 locks held by kworker/1:2/2221:
+ #0: ffff0000c028d138 ((wq_completion)gfs_recovery){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262
+ #1: ffff800015de3d80 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264
+2 locks held by getty/2758:
+ #0: ffff0000c535f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244
+ #1: ffff80000f6be2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177
+1 lock held by syz-executor189/3110:
+ #0: ffff0000cb5ee0e0 (&type->s_umount_key#40/1){+.+.}-{3:3}, at: alloc_super+0xf8/0x430 fs/super.c:228
+
+=============================================